The man who resembles one of the two police sketches of the suspects of the Samjhauta Express blasts was on Friday sent to Panipat for further interrogation though his identity remains "doubtful."

Salman, 35, reached Panipat from Mumbai about a month ago, but "there is no criminal case against him and no case has been registered against him in connection with the train blasts either, though he has a previous criminal record," Bikaner range Inspector-General of Police Laxman Meena said.

"His identity is doubtful," Meena said referring to his being picked up for questioning on the basis of the police sketches of the two suspects who alighted from the train on Sunday before the blasts.

Meena said Salman was handed over to the Haryana police for further interrogation.

He had been staying with Sayara Banu alias Sora, whose husband Taj Mohammad fled the joint raid on their house on Wednesday.

Twenty-five bottles filled with kerosene, petrol and diesel were seized from the house in Nayashahar, Meena said.

"Taj is a railway employee and will be caught soon," he said adding, a case under the Prevention of Immoral Traffic Act was pending against the husband-wife for alleged involvement in the flesh trade.

Salman told police during interrogation that Sora was a "distant cousin", but she has denied any family ties with him. So far, Salman and Sora have been grilled in Bikaner and one Kamrudeen in Gangashahar, Meena added.

Later in the day, Sora was arrested for alleged possession of petrol and diesel in her house and produced in a local court which granted her bail, a Nayashar police official said.

She was arrested under Section 411 (theft and illegal possession of flammable substance) of the IPC, he said.